Neal, I would seriously think about putting up a design for the machine you are building or starting a build log, you could save yourself wasting money, time & effort which if you are on a tight budget is going to be of real value.

I already have a couple of reservations from what you have said, not sure that 3/4 ally angle is wide enough for use with skate bearings ( I assume that's what your using) secondly what gauge is it as 1/16 won't be suitable.

What sort of router do you intend using & how are you going to control the spindle speed which you will need to do for cutting acrylic.